Digital BW, The Print

Craig,
if your concern is the eboni-dye incompatibility, I think you are
worrying a little more than necessary.  It is, certainly, true that
there is a problem mixing these inks, but mild mixing does not always
cause problems. I run several 1270 and 1290 printers with eboni, and
when I have had problems with foam in sponges etc., have used dyes to
test the printer and clear the problem before reinstating CIS or eboni
refil.  I have never had  problems directly attributable to the
mixture.  

Print a *lot* with eboni for a few days and get it everywhere - it
should overwhelm any dye ink or base left over from a previous use.  
Do a few clean cycles (not more than 3 between prints of course.) 

Don't print a tiny amount and then pause to see what happens ...

Ken